Envelop.



T. NORGBLL.

BNVBLOP.

ArrLlcA'rIon rILnn JULY 25, 1907.

921,275, Patented May11,1909.

l l l l F the user and sealed without the use of gum or THOMAS NORGELL, OF CHICAGO, ILLINOIS.

ENVELOI?.

Specification of Letters Patent.

Patented May 1 1, 1909.

Application filed July 25, 1907. Serial No. 385,498.

J 10 all whom it may cmicern:

Be it known that I, THOMAS NonGELL, a subject of the Czar of Russia, and a resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Envelope, of which the followingl is a clear, full, and exact description My invention relates to envelope and particularly to the kind in which the inner surface of the envelop is adapted to be written upon before the envelop is folded and sealed.

The object of iny invention is to provide an envelop which is designed to be folded. by

nuicilage in such manner that it cannot be opened without tearing it and when thus opened cannot be again sealed. This I accomplish by the means hereinafter fully described and as particularly pointed out in the claims.

In the drawings z-Figure 1 is a lan view of my improved envelop opened. ig. 2 is a perspective view showing the first fold of the envelop. Fig. 3 is a similar view showing the second fold. Fig. 4 is similar View showing the third fold. Fig. 5 is a similar View showing the fourth fold. Fig. 6 is a detail view of the locking or sealing devices of my invention.

My improved envelop is made from a substantially square piece of aper or other suitable material, which is follded by two longitudinal creases a, o, so as to produce three equal transverse folds, and two transverse creases b, t, so as to roduce three equal longitudinal folds, and orm nine corres onding square divisions, the central one of w ich, A, constitutes the front of the envelop, and the remaining surrounding divisions are adapted to be folded. over back of the central square A in such manner as to forni the back of the envelop and afford a sup ort for the sealing and locking devices o` the same. The square corner divisions B, C, I), and E are each given a diagonal crease c that extends in alinenient with the diagonale of the envelop blank and is bent or convexed toward the front surface of the same. The square divisions F, G, H and I, located between said corner divisions, are each provided with diagonal creases d that extend from the right hand corner of the central division A to the outer left-hand corners of their respective dil visions to the edge of the blank which divisions are bent or convexed toward the rear of said blank.

The means for lockingI the envelop consists of a suitable staple c secured diagonally across the hack of square E near its outer corner, and a clip f secured on the face of square B and extending in a direction at right annles to that of sta )le le. The portion of this ciip that engages the staple consists of two overlapping ortions (as shown in Fig. 6 of the drawings that press toward each other and when said staple has assed hetween the saine to lock and seal t e envelop it is impossible to release the saine from the exterior.

Now in order to forni the back of the cnvelop section B is folded fiat over section F and then the outer triangle of sections B and F is bent on the lines of creases c and d back over the front of the latter, F. This action brings the half of section I adjoining section B over the central section A, and causes the half of said section I next section E to fold back on the line of crease d, over the first mentioned half section thereof and in this position, when section C is folded over section G, said sections B and F will fold over the central section outside of section I. The outer triangle of sections C and G is then bent on the lines of creases c and d back over the front of G, and then said last mentioned sections are folded on the line of crease b over the central section outside of sections I, B and F. 1When making this last fold section D folds over infront of section H, as shown in Fig. 4, and then the outer triangles of the saine are folded on the line of the creases c and d back over section H and then the two r sections are 'folded over the central sections outside of the previously folded sections C and G. This last fold causes section E to fold upon itself on the line of crease c thereof and forms a triangular shaped flap, substantially as shown in Fig. 5 of the drawings, which has the staple 7c on its front surface. This outer iiap section E is then folded over the back of the envelo and its point tucked under sections B and until staple k, which will. be at right angles to the lapping ends of the nietal clip is pushed beyond the eX- tremity of the outer Hap, whereupon said fiap is drawn out slight and the staple moves under said outer end and until it moves pest the inner lapped end of the strip, whereupon the envelop will be effcctunly sealed.

In order to assist in opening the envelop nfter it is senlcd l have provided section L with n straight series of )crforaitions l which intersect the center of length of crcnsc c et right ongles. When the envelop is settled, flap section E een be torn off on the line of these perforzttions sind the envelop easily opened.

If desired the lock strip end the stnple iney be omitted and the envelop sini ply folded in the manner exphiined :ind closed by lisp-section E iis shown end thus comply with the postalregulations concerning open letters.

An epistle written on seperate iiotc or lettcr pnper nitty be folded itnd inclosed within my iin roved envelop, but if desired the inside of? the envelop blank n'iziy itself be written upon either ruled or not to suit the teste.

l do not desire to be coniined to the plztcel one member of which is secured to seid peiment of the lock-strip sind stai-ple es lierei nbcfore set-forth es tliei'e are other positions iii which they may be located and senil the envelop, although not so cffectunll y or securely i i other :ind diagonally upon themselves, end velop cannot be opened without tearing or i mutilation to such en extent es to ineke de- :is in the positions indicated, in which the en 1. An envelop comprising a rectsnguler" sheet folded into e series of rectangular seetions, each of seid sections adjacent to the outer edges of the sheet being provided with i ii diagonal crease, pcrforetions extending? across e corner section at en engle to the creiise thereon, seid sections being folded upon escl] other end diagonally upon themselves, and thc perforated section having e portion thereof inserted between the folds of two adjacent sections An envelop coinprisinpl n rectangular sheet folded into n series of rectitngulnr sections, n, two piece lockinpr device one nicinber of which is secured to one corner section und the opposite ineinbcr of which is secured to ai-iiothcr section, euch of the sections :idjnccnt to the outer edges ol' said sheet being provided with :i diagonal crease end folded upon cztch other inid diagonally upon themselves, :ind the locking corner section having :t portion thereof inserted between the folds of two edjiiccnt sections whereby the ports ol' seid locking' device engage ciieh other.

3. An envelop comprising e rectnngnhi' sheet folded into n series of rectangular scetioiis, erich ol' the sections edjiteeiit to the outer edges of the sheet being,l provided with e dingonal crease, perforsitions extending; across e corner section et mi angle to the crease thereon, :i two piece locking device forntcd section :ind the opposite ineinher of which is secured. to :inothei section, said creased sections being folded upon each seid locking:r corner section having s portion thereof inserted between the folds of two ed- Vicent sections whereby the parts of seid ocking device engage eech other.

ln testimony whereof I have hereunto set niy hand end seul this 20th dey of July, A. D., 1907.

T11( )MAS ORGELL. W'itnesses:

FRANK D. TiioMAsoN, E. K, LUNDY.

[Li s] lill 

